Re: OT genetics

On Sun, 24 Nov 2024 08:14:30 -0500, legg <legg@nospam.magma.ca> wrote:

On Sat, 23 Nov 2024 11:55:46 -0800, john larkin <JL@gct.com> wrote:
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On Sat, 23 Nov 2024 10:36:50 -0500, legg <legg@nospam.magma.ca> wrote:
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On Fri, 22 Nov 2024 07:22:03 -0800, john larkin <JL@gct.com> wrote:
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On Fri, 22 Nov 2024 08:26:17 -0500, legg <legg@nospam.magma.ca> wrote:
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On Thu, 21 Nov 2024 15:40:41 -0800, john larkin <jl@glen--canyon.com>
wrote:
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I was observing that some people can't stand mayonnaise (I like it)
and some people hate cilantro (I detest it. I carry tweezers to pick
small bits out of my Mexican food.)
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One of my guys is the opposite, hates mayo and loves cilantro. He
suggested that there may be a one common gene for both cases.

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OT? Is it EVER!
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RL

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Design any cool electronics lately?
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I'm doing power dummy loads that simulate impedances, but I can't
discuss that in detail.

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The only kind of 'load' that's 'cool' is one that recovers
energy to the source. Loads that are cheap, disposable and
commonly used will be thrown together from off the shelf
crap drawing on HVAC catalog parts and operated by meat
puppets on the production floor, long after the 'designer'
blows his head off in an off-season motel room.

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Yes, an inductive or capacitive load has to at least pretend to return
energy it got from the customer. A good inductor simulator has to do
that, and tolerate bipolar PWM inputs, and behave like a real inductor
to diode or zener clamped flybacks.

<snip>
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Storage shouldn't be an issue, but that and return delivery
will be lass efficient that the real thing, which could
inevitably reflect on size. It's surface temperature rize
that determines this on the real inductor, too, so . . .

An inductor simulator needn't store energy, it just has to pretend to.

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Which isn't saying it won't weigh less.

It might weigh 0.1% of a real 20 henry 10 amp inductor.

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The difference in efficiency will determine how much juice
has to be drawn from an external source, for steady state.
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Loads are ~infrastructure. The important thing is that the
product that's actually being tested/stressed sees a
realistic and effective environment.

Fortunately, real inductors are far from ideal components, so our
simulated ones needn't be perfect either.

Maybe we can make them programmably bad.

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Rl